openpilot/common/timeout.py
Adeeb d9bf9f0a40
Enable more flake8 checks (#1602)
* enable some more flake8 checks

* some more quick ones

* bump opendbc

* e401

* e711 e712

* e115 e116

* e222

* e301

* remove that

* e129

* e701 e702

* e125 e131

* e227

* e306

* e262

* W503

* e713

* e704

* e731

* bump opendbc

* fix some e722
2020-05-30 20:14:58 -07:00

28 lines
707 B
Python

import signal
class TimeoutException(Exception):
pass
class Timeout:
"""
Timeout context manager.
For example this code will raise a TimeoutException:
with Timeout(seconds=5, error_msg="Sleep was too long"):
time.sleep(10)
"""
def __init__(self, seconds, error_msg=None):
if error_msg is None:
error_msg = 'Timed out after {} seconds'.format(seconds)
self.seconds = seconds
self.error_msg = error_msg
def handle_timeout(self, signume, frame):
raise TimeoutException(self.error_msg)
def __enter__(self):
signal.signal(signal.SIGALRM, self.handle_timeout)
signal.alarm(self.seconds)
def __exit__(self, exc_type, exc_val, exc_tb):
signal.alarm(0)